*The [http://digital.library.umsystem.edu/ University of Missouri Digital Library] has digital copies of [http://digital.library.umsystem.edu/cgi/i/image/image-idx/cgi/i/image/image-idx?sid=7474c95ce6e68ec22a63efb27869515c;page=index;c=platic Missouri county plat books] {{nowrap|(ca. 1930)}} for all Missouri counties including Barry County. The city of St. Louis is not included in this collection.<br>

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*The [http://digital.library.umsystem.edu/ University of Missouri Digital Library] has digital copies of [http://digital.library.umsystem.edu/cgi/i/image/image-idx/cgi/i/image/image-idx?sid=7474c95ce6e68ec22a63efb27869515c;page=index;c=platic Missouri county plat books] {{nowrap|(ca. 1930)}} for all Missouri counties including Barry County. The city of St. Louis is not included in this collection.<br>

*[http://www.mygenealogyhound.com/missouri-counties/barry-county-missouri-genealogy-biographies.asp Biographies from The History of Barry County, Missouri] (1888) published by Goodspeed are available free on the My Genealogy Hound website.